1fbd5101492ab9a490ccf0f925c0e672858a6ff31aeba78c217481366ef62a2a

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/09/2024, 08:04

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General

Target

e351668d68d45749607c1a6cfb1de480N.exe
Size

67KB
MD5

e351668d68d45749607c1a6cfb1de480
SHA1

5c5419d549d690406ea5a8f3791d0927db999584
SHA256

1fbd5101492ab9a490ccf0f925c0e672858a6ff31aeba78c217481366ef62a2a
SHA512

4be86887e25f9f7811c819f1b61f61109fd9c3cffc453b0eb4cb04514bab4aa834103a8bcc28ae5c79d28fbaeec46419302fb116f99aee5ca1d64360be4dcae6
SSDEEP

1536:EgXsfgWQN1kYsRxWTg3PwSWe991Rdolpdz6JAkAT:1tWYfGATvPe9slp+ApT

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
1716	explorer.exe
2736	spoolsv.exe
2724	svchost.exe
2764	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
1352	e351668d68d45749607c1a6cfb1de480N.exe
1352	e351668d68d45749607c1a6cfb1de480N.exe
1716	explorer.exe
1716	explorer.exe
2736	spoolsv.exe
2736	spoolsv.exe
2724	svchost.exe
2724	svchost.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	e351668d68d45749607c1a6cfb1de480N.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e351668d68d45749607c1a6cfb1de480N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1352	e351668d68d45749607c1a6cfb1de480N.exe
1716	explorer.exe
1716	explorer.exe
1716	explorer.exe
2724	svchost.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe
1716	explorer.exe
2724	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1716	explorer.exe
2724	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1352	e351668d68d45749607c1a6cfb1de480N.exe
1352	e351668d68d45749607c1a6cfb1de480N.exe
1716	explorer.exe
1716	explorer.exe
2736	spoolsv.exe
2736	spoolsv.exe
2724	svchost.exe
2724	svchost.exe
2764	spoolsv.exe
2764	spoolsv.exe
1716	explorer.exe
1716	explorer.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 1716	1352	e351668d68d45749607c1a6cfb1de480N.exe	30
PID 1352 wrote to memory of 1716	1352	e351668d68d45749607c1a6cfb1de480N.exe	30
PID 1352 wrote to memory of 1716	1352	e351668d68d45749607c1a6cfb1de480N.exe	30
PID 1352 wrote to memory of 1716	1352	e351668d68d45749607c1a6cfb1de480N.exe	30
PID 1716 wrote to memory of 2736	1716	explorer.exe	31
PID 1716 wrote to memory of 2736	1716	explorer.exe	31
PID 1716 wrote to memory of 2736	1716	explorer.exe	31
PID 1716 wrote to memory of 2736	1716	explorer.exe	31
PID 2736 wrote to memory of 2724	2736	spoolsv.exe	32
PID 2736 wrote to memory of 2724	2736	spoolsv.exe	32
PID 2736 wrote to memory of 2724	2736	spoolsv.exe	32
PID 2736 wrote to memory of 2724	2736	spoolsv.exe	32
PID 2724 wrote to memory of 2764	2724	svchost.exe	33
PID 2724 wrote to memory of 2764	2724	svchost.exe	33
PID 2724 wrote to memory of 2764	2724	svchost.exe	33
PID 2724 wrote to memory of 2764	2724	svchost.exe	33
PID 2724 wrote to memory of 2652	2724	svchost.exe	34
PID 2724 wrote to memory of 2652	2724	svchost.exe	34
PID 2724 wrote to memory of 2652	2724	svchost.exe	34
PID 2724 wrote to memory of 2652	2724	svchost.exe	34
PID 2724 wrote to memory of 1676	2724	svchost.exe	37
PID 2724 wrote to memory of 1676	2724	svchost.exe	37
PID 2724 wrote to memory of 1676	2724	svchost.exe	37
PID 2724 wrote to memory of 1676	2724	svchost.exe	37

C:\Users\Admin\AppData\Local\Temp\e351668d68d45749607c1a6cfb1de480N.exe
"C:\Users\Admin\AppData\Local\Temp\e351668d68d45749607c1a6cfb1de480N.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1352
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1716
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2736
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Boot or Logon Autostart Execution: Active Setup
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2724
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2764
    - - C:\Windows\SysWOW64\at.exe
        
        at 08:06 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2652
    - - C:\Windows\SysWOW64\at.exe
        
        at 08:07 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
67KB

MD5
f23e298e411934479fadfc91239817f1

SHA1
0112be0069266ddffcfce6c58bb967a8715b1e3c

SHA256
bf508ffb1b27f06a4aa0c9c5c0a337d20045ac952c1dd93223dabc91c247d8f4

SHA512
6a7111455ced3361b26dabc5302db4861ace506c49a002d41a0b90580a6beefdcc7cd39f57f13b7e807022d280575429c00a061bdcc229a81398379e0c0b76ab

Download Submit
C:\Windows\system\explorer.exe

Filesize
67KB

MD5
2e53505b5c2ab1a777b9ddd2653b7d13

SHA1
b1e3295c6b3d7599d5d54e21c691c089a880d9ee

SHA256
bf5d1d9ed6185b8ea0dadd8c6446ed8968f11775302fad4e0ab52889497a23b2

SHA512
a17769e778c6860e1eb9dee50e41480d37385b34660d98737ccc5a76f79bd232454ec2595841459cc1bbf8127544efe599095a440caaabd9f4e4534a7542f41a

Download Submit
\Windows\system\spoolsv.exe

Filesize
67KB

MD5
1b6a37931c7d67600a7ba81be4770a3b

SHA1
dd21980ede33952e6ac51fbb85d96a2a430e2073

SHA256
3a30570c72e91ce9639c0344d1cf435ab803afca627fbb01b584aa5c0ff8a733

SHA512
969807d1f8d8869b9c1fc8cdc1dcfb260ed57dfd732b28ca032b5d307f68f9e94c2492db838b28f071e937f310aaa2c11c8c504a479c4d580c74cdffa9e0a333

Download Submit
\Windows\system\svchost.exe

Filesize
67KB

MD5
9cb0df7d41bd5bac697181c0a6252e6c

SHA1
5f576bc5abf710bcbeb46ee700c507bfadb0dd6f

SHA256
ab3d8ab7ed81dc97de3d6cc380814e059527e56e96b1baf93bbe52095560934c

SHA512
7c80b6a5d0712b929d925617dae9d2d3ccddf185952d88e22c1b247e0ad577bf25178d3f05640ea82a0dd98b3cd9f6e30bdcabdb64f3c3ae9fda0bedb6679ce5

Download Submit
memory/1352-83-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1352-54-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1352-1-0x0000000000020000-0x0000000000024000-memory.dmp

Filesize
16KB

Download
memory/1352-84-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1352-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1352-18-0x00000000030F0000-0x0000000003121000-memory.dmp

Filesize
196KB

Download
memory/1352-17-0x00000000030F0000-0x0000000003121000-memory.dmp

Filesize
196KB

Download
memory/1352-6-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1352-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1352-48-0x0000000000020000-0x0000000000024000-memory.dmp

Filesize
16KB

Download
memory/1352-2-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/1716-35-0x0000000002710000-0x0000000002741000-memory.dmp

Filesize
196KB

Download
memory/1716-62-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1716-102-0x0000000002710000-0x0000000002741000-memory.dmp

Filesize
196KB

Download
memory/1716-99-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1716-87-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1716-19-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1716-24-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1716-20-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2724-58-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2724-68-0x0000000002630000-0x0000000002661000-memory.dmp

Filesize
196KB

Download
memory/2724-63-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2724-57-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2724-69-0x0000000002630000-0x0000000002661000-memory.dmp

Filesize
196KB

Download
memory/2724-86-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2736-56-0x0000000002480000-0x00000000024B1000-memory.dmp

Filesize
196KB

Download
memory/2736-79-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2736-49-0x0000000001C70000-0x0000000001CA1000-memory.dmp

Filesize
196KB

Download
memory/2736-37-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2736-45-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2764-77-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2764-71-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download